Using Boss ME-90 as a preamp? (in: Guitars)

By: BertKoor
18 Jun 13:59

I don’t see why not.

See www.boss.info/global/products/me-90/specifications/
The input (and return) impedance is 1 MΩ, which is “HiZ” or “instrument” (as expected).
The output (and send) impedance is 1KΩ, at -10dBu, which is often called “line level” (of the “consumer” kind; “pro” level is +4dBu)
This usually goes into a guitar amp or whatever accepts line level inputs.

Rule of thumb: an input impedance needs to be at least 10x higher than the impedance of the output it’s connected t…

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